Tag: "much" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...another piece in the unfolding mystery of just how much the prenatal environment may shape a childs health and development for years to come. The survey-based study, part of the Avon Longitudinal Study of Parents and Children (ALSPAC), assessed pregnant women living in Avon, England, who were due to gi...

Genomic Analysis Uncovers New Targets for HIV Vaccine

...e variants in key immune system cells appear to be much better at controlling the proliferation of the virus after infection. These gene variants are known as polymorphisms. "These results not only approximately double our understanding of the factors that influence variation amongst individuals in how t...

Scratch no more: Gene for itch sensation discovered

...at laboratory mice that lacked this gene scratched much less than their normal cage-mates when given itchy...ducing substances, but the knockout mice scratched much less. "The fact that the knockout mice still scratched a little suggests there are additional itch r...

One species, many genomes

...p plants such as corn, that of Arabidopsis is very much streamlined, and its size is less than a twentieth...e for defense against pathogens or infections, are much more variable than the average gene. "The genetic variability appears to reflect adaptation of local...

Cellular message movement captured on video

...eally very complex and I’m not sure we’re covering much as yet. We certainly don’t know all the interactio... the nucleus,” said Chien. “The whole situation is much more complex than we have been able to show.” Chien, Hu, and their colleagues at UCSD had previou...

Brain inflammation may be friend, not foe, for Alzheimer's patients

... recognized as a critical player in bringing about much of the brain damage that follows a stroke and brai... role in Alzheimer’s disease,” said O’Banion. “But much of the evidence comes from experiments with cells in a dish or postmortem human tissue, not from liv...

Soils offer new hope as carbon sink

...sil fuels. "So it is not surprising there is so much interest in a technology to create clean energy that also locks up carbon in the soil for the long term and lifts agricultural production," he said. The trials at Wollongbar have focused on the benefits of agrichar to agricultural productivity. ...

Old memory traces in brain may trigger chronic pain

...dicated the animals’ emotional suffering decreased much more than their physical pain. While the physical pain appeared to be reduced 30 percent – their emotional suffering completely disappeared. Rat are nocturnal animals that prefer to be in the dark and are averse to bright light. Researchers plac...

Modeling the restless brain

...ond fluctuations of activity emerge naturally from much faster, chaotic neural interactions that typically last only a few milliseconds. "Our model suggests that the cortical resting state is not time-invariant, but instead contains rich and interrelated temporal structure at multiple time scales that...

How sneaky HIV escapes cells

...Viruses like HIV use pathways we barely recognize, much less understand,” Gould says. “Our paper highlights the importance of studying their basic biochemistry and cell biology, which can yield a better understanding of normal human biology as well as identify new avenues in the fight against human diseas...

Snoring in children might be an allergic type disease

... obesity. But in children it seems that snoring is much more closely related allergy and inflammation”. “Our data hopefully contribute to a clinician’s ability to effectively spot snoring in pre-school children in order to identify potentially more serious obstructive sleep apnoea.” ...

A new plant-bacterial symbiotic mechanism promising for crop applications

... The plant thus acquires the possibility of fixing much higher quantities of nitrogen than those usually measured in leguminous plants which have nodules only on their roots. The researchers sequenced (3) the genes of two bacterial strains of Bradyrhizobium, ORS278 and BTAi1, in order to find out thei...

Dirty snow may warm Arctic as much as greenhouse gases

...auses temperatures in the polar regions to rise as much as 3 degrees Celsius during some seasons, the scientists say. “Once the snow is gone, the soot that caused the snow to melt continues to have an effect because the ground surface is darker and retains more heat,” Zender said. Dirty snow is prev...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

...to anti-malarial drug resistance is important, but much smaller than what many researchers thought it woul...e to create and express a synthetic version of the much smaller PfCRT gene. PfMDR1 is made up of about 4,000 base pairs and its protein is particularly larg...

Caribbean frogs started with a single, ancient voyage on a raft from South America

...itus of the University of Kansas, were involved in much of the field work. A third co-author of the study is Penn State graduate student Matthew Heinicke, who performed DNA sequencing and analysis. One prominent theory had proposed that frog species on the large islands of Cuba, Jamaican, Hispaniola, ...

New bacterium discovered -- related to cause of trench fever

... culture of the new organism made study of the DNA much easier. Also collaborating on the research were scientists at the Massachusetts General Hospital of Harvard Medical School and the Centers for Disease Control and Prevention. Before 1990, no Bartonella infections had been identified in the U....

Ancient DNA traces the woolly mammoth's disappearance

...University of London. “For the mammoth, this seems much more likely to have been driven by environmental rather than human causes, even if humans might have been responsible for killing off the small, terminal populations that were left.” Barnes, along with Dr. Adrian Lister of the University College L...

Dual-imaging technique useful before -- and during -- brain surgery

...atients with limited vision may not demonstrate as much activity in the brain in areas linked to vision during functional MRI testing. “That doesn’t necessarily mean that there’s no function there—it may just be that functional MRI is not sensitive enough to detect it,” says Leach....

'Lucky 13' as new gene discovery offers further hope for childhood blindness

...der this a 'lucky thirteenth' as we are building a much clearer picture of what causes the disorder." Professor Inglehearn believes that lebercilin may be involved in moving proteins from the inner to outer segments of photoreceptors in the retina. Protein transport is essential within retinal photorec...

U-M researchers discover gene switched off in cancer can be turned on

... has not changed in 30 years. Newer treatments are much less toxic and extend lives by months, but the sam...to 500 people is setting ourselves up for failure, much like a one-size-fits-all clothing store would never succeed,” Reisman says. “Targeted therapies ...

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